Noise correlations of one-dimensional Bose mixtures in optical lattices
arXiv:1002.4918 · doi:10.1103/PhysRevA.81.063602
Abstract
We study the noise correlations of one-dimensional binary Bose mixtures, as a probe of their quantum phases. In previous work, we found a rich structure of many-body phases in such mixtures, such as paired and counterflow superfluidity. Here we investigate the signature of these phases in the noise correlations of the atomic cloud after time-of-flight expansion, using both Luttinger liquid theory and the time-evolving block decimation (TEBD) method. We find that paired and counterflow superfluidity exhibit distinctive features in the noise spectra. We treat both extended and inhomogeneous systems, and our numerical work shows that the essential physics of the extended systems is present in the trapped-atom systems of current experimental interest. For paired and counterflow superfluid phases, we suggest methods for extracting Luttinger parameters from noise correlation spectroscopy.
arXiv comment11 pages, 8 figures
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Cited by in corpus (6)
- Doping a lattice-trapped bosonic species with impurities: From ground state properties to correlated tunneling dynamics
- Quench dynamics of Rydberg-dressed bosons on two-dimensional square lattices
- Detecting paired and counterflow superfluidity via dipole oscillations
- The impact of spatial correlation on the tunneling dynamics of few-boson mixtures in a combined triple well and harmonic trap
- Anisotropic pair-superfluidity of trapped two-component Bose gases
- Nonlocal order parameter of pair superfluids